Strophomenata - Productida - Productellidae

Full reference: J. B. Waterhouse. 1983. A Late Permian lyttoniid fauna from northwest Thailand. Papers of the Department of Geology, University of Queensland 10(3):111-153

Belongs to Transennatia according to J. B. Waterhouse 1983

Sister taxa: Transennatia anshunensis, Transennatia gratiosa, Transennatia insculpta, Transennatia margaritatus, Transennatia mucrota, Transennatia reedi, Transennatia striata, Transennatia sulcata, Transennatia termierorum, Transennatia timorensis, Transennatia waterhousei

Type specimen: TBR 417. Its type locality is Huai Mae Phlung, Doi Pha Phlung 20F, Lampang Province, which is in a Changhsingian marine shale in the Huai Tak Formation of Thailand.

Ecology: stationary low-level epifaunal suspension feeder

Average measurements (in mm): valve 11.0 x 14.5